In the book there are 140 pages exactly.
Camp Concentration has 177 pages.
Joris of the Rock has 325 pages.
Dragon's Rock has 160 pages.
Angel Rock has 320 pages.
Riven Rock has 496 pages.
The Rock Jockeys has 80 pages.
Amazon shows, "The Camp of the Dog", by Algernon Blackwood listed as having 76 pages.
The Best of L. Sprague de Camp has 301 pages.
Camp X novel by Eric Walters has 224 pages.
The Ghost at Skeleton Rock has 192 pages.
Fargo Rock City has 288 pages.
"The Rock of Tanios" by Amin Maalouf has 272 pages in its English translation edition.